Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets
Abstract Dielectric polymer capacitors suffer from low discharged energy density and efficiency due to their low breakdown strength, small dielectric constant and large electric hysteresis. Herein, a synergistic enhancement strategy is proposed to significantly increase both breakdown strength and d...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55112-1 |
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| author | Zhenhao Fan Jian Dai Yuyan Huang Hang Xie Yitao Jiao Wenfeng Yue Fu Huang Yuqun Deng Dawei Wang Qingfeng Zhang Yunfei Chang |
| author_facet | Zhenhao Fan Jian Dai Yuyan Huang Hang Xie Yitao Jiao Wenfeng Yue Fu Huang Yuqun Deng Dawei Wang Qingfeng Zhang Yunfei Chang |
| author_sort | Zhenhao Fan |
| collection | DOAJ |
| description | Abstract Dielectric polymer capacitors suffer from low discharged energy density and efficiency due to their low breakdown strength, small dielectric constant and large electric hysteresis. Herein, a synergistic enhancement strategy is proposed to significantly increase both breakdown strength and dielectric constant while suppressing hysteresis, through introducing 2-dimensional bismuth layer-structured Na0.5Bi4.5Ti4O15 micro-sheets and designing a unique bilayer structure. Excitingly, an ultra-high discharged energy density of 25.0 J cm−3 and a large efficiency of 81.2% are achieved in Na0.5Bi4.5Ti4O15-poly(vinylidene fluoride-co-hexafluoropropylene)/Na0.5Bi4.5Ti4O15-polyetherimide bilayer composites under a dramatically enhanced breakdown strength of 8283 kV cm−1. Finite element simulations along with experimental test results demonstrate that greatly improved breakdown strength is ascribed to uniform and horizontal alignments of Na0.5Bi4.5Ti4O15 sheets (~1–2 μm) in the matrix and interface effect of adjacent layers with large dielectric differences, which effectively inhibit electrical tree evolution and conduction loss. This work provides a strong foundation for developing high-performance polymer-based energy storage devices. |
| format | Article |
| id | doaj-art-49cba30717304323839fd9de5f899cce |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-49cba30717304323839fd9de5f899cce2025-02-02T12:32:33ZengNature PortfolioNature Communications2041-17232025-01-0116111010.1038/s41467-024-55112-1Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheetsZhenhao Fan0Jian Dai1Yuyan Huang2Hang Xie3Yitao Jiao4Wenfeng Yue5Fu Huang6Yuqun Deng7Dawei Wang8Qingfeng Zhang9Yunfei Chang10School of Instrumentation Science and Engineering, Harbin Institute of TechnologySchool of Instrumentation Science and Engineering, Harbin Institute of TechnologySchool of Materials Science and Engineering, Hubei UniversitySchool of Instrumentation Science and Engineering, Harbin Institute of TechnologyInstitute of Applied Physics and Materials Engineering, University of Macau Avenida da UniversidadeSchool of Instrumentation Science and Engineering, Harbin Institute of TechnologySchool of Instrumentation Science and Engineering, Harbin Institute of TechnologySchool of Instrumentation Science and Engineering, Harbin Institute of TechnologySchool of Instrumentation Science and Engineering, Harbin Institute of TechnologySchool of Materials Science and Engineering, Hubei UniversitySchool of Instrumentation Science and Engineering, Harbin Institute of TechnologyAbstract Dielectric polymer capacitors suffer from low discharged energy density and efficiency due to their low breakdown strength, small dielectric constant and large electric hysteresis. Herein, a synergistic enhancement strategy is proposed to significantly increase both breakdown strength and dielectric constant while suppressing hysteresis, through introducing 2-dimensional bismuth layer-structured Na0.5Bi4.5Ti4O15 micro-sheets and designing a unique bilayer structure. Excitingly, an ultra-high discharged energy density of 25.0 J cm−3 and a large efficiency of 81.2% are achieved in Na0.5Bi4.5Ti4O15-poly(vinylidene fluoride-co-hexafluoropropylene)/Na0.5Bi4.5Ti4O15-polyetherimide bilayer composites under a dramatically enhanced breakdown strength of 8283 kV cm−1. Finite element simulations along with experimental test results demonstrate that greatly improved breakdown strength is ascribed to uniform and horizontal alignments of Na0.5Bi4.5Ti4O15 sheets (~1–2 μm) in the matrix and interface effect of adjacent layers with large dielectric differences, which effectively inhibit electrical tree evolution and conduction loss. This work provides a strong foundation for developing high-performance polymer-based energy storage devices.https://doi.org/10.1038/s41467-024-55112-1 |
| spellingShingle | Zhenhao Fan Jian Dai Yuyan Huang Hang Xie Yitao Jiao Wenfeng Yue Fu Huang Yuqun Deng Dawei Wang Qingfeng Zhang Yunfei Chang Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets Nature Communications |
| title | Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets |
| title_full | Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets |
| title_fullStr | Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets |
| title_full_unstemmed | Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets |
| title_short | Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets |
| title_sort | superior energy storage capacity of polymer based bilayer composites by introducing 2d ferroelectric micro sheets |
| url | https://doi.org/10.1038/s41467-024-55112-1 |
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